CN115194490B - Flat curved surface milling-rolling composite device based on ultrasonic vibration - Google Patents
Flat curved surface milling-rolling composite device based on ultrasonic vibration Download PDFInfo
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- CN115194490B CN115194490B CN202211118197.XA CN202211118197A CN115194490B CN 115194490 B CN115194490 B CN 115194490B CN 202211118197 A CN202211118197 A CN 202211118197A CN 115194490 B CN115194490 B CN 115194490B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2270/00—Details of milling machines, milling processes or milling tools not otherwise provided for
- B23C2270/10—Use of ultrasound
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Abstract
The invention relates to the technical field of milling-rolling combined machining, in particular to a flat curved surface milling-rolling combined device based on ultrasonic vibration. The ultrasonic vibration-based flat curved surface milling-rolling composite device comprises a variable amplitude component provided with an upper variable amplitude part and a lower variable amplitude part, a milling component provided with an angle chuck and a rolling component, so that the device can realize the switching processing mode of plane and hole curved surfaces on the premise of not replacing a cutter; meanwhile, the same equipment can be suitable for processing of different materials through amplitude variation adjustment by amplitude variation adjustment of the upper amplitude variation part and the lower amplitude variation part, so that the processing quality is improved; in addition, the milling angle of the face milling blade can be changed through the structure of the angle chuck, and the machining efficiency of cutting machining is further improved.
Description
Technical Field
The invention relates to the technical field of milling-rolling combined machining, in particular to the technical field of milling-rolling combined machining based on ultrasonic vibration, and specifically relates to a flat curved surface milling-rolling combined device based on ultrasonic vibration.
Background
At present, milling is one of the most widely used processing technologies in the field of processing and manufacturing, however, with the rapid development of the domestic aerospace field, the automobile manufacturing field and the like, the requirement of the domestic manufacturing industry for prolonging the service life of parts is increased day by day, so that the strength and hardness of the processed material are also obviously improved, and the difficulty is increased for milling.
The rolling technology is used as a post-treatment process, grain refinement of the surface layer of the workpiece can be realized, and higher residual compressive stress is generated on the surface layer of the workpiece, so that the service life of the part can be prolonged. Rolling generally involves rolling and pressing a workpiece surface by rolling balls or rollers to fill wave crests on the uneven surface of the workpiece into wave troughs, thereby reducing the roughness of the workpiece surface.
The part needs to undergo a tool changing link in the processes of pre-cutting machining and post-processing rolling machining. After the tool is changed, the tool needs to be set again on the machined surface, a machining path is determined, the machining period of the part is increased, and the machining efficiency is low.
In the prior art, for example, the patent number is 201610825933.3, the patent name is a planar milling-rolling composite device and a milling machine comprising the device, although tool changing is not required in the milling-rolling process, the composite device can only process a planar surface, cannot process a curved surface (cylindrical surface), cannot adjust a milling angle according to diversification of a processed material or improve processing quality by other methods, and the application range is limited.
Disclosure of Invention
The invention aims to solve the problems that the existing milling-rolling composite device can not process a curved surface and can not adjust the milling angle according to the diversification of the processed materials or improve the processing quality in other ways, and provides a milling-rolling composite device which can adapt to the diversification of the processed materials by changing the ultrasonic amplitude and can process a flat curved surface, namely a flat curved surface milling-rolling composite device based on ultrasonic vibration.
The invention is realized by adopting the following technical scheme: a milling-rolling composite device for a flat curved surface based on ultrasonic vibration comprises a tool shank, a slip ring, an ultrasonic transducer, an external ultrasonic generator, an amplitude variation assembly, at least one milling assembly, at least one rolling assembly, a shell-shaped tool body and a tool cover, wherein the tool shank is used for being connected with a main shaft of a machine tool; the stator of the slip ring is electrically connected with the ultrasonic transducer, and the rotor of the slip ring is electrically connected with the ultrasonic generator; the amplitude-changing component comprises an upper amplitude-changing part and a lower amplitude-changing part, wherein the lower amplitude-changing part is provided with an axial central hole, a plurality of radial through holes are uniformly distributed in the circumferential direction of the upper part of the lower amplitude-changing part, a radial rod is arranged in each radial through hole, an amplitude-changing spring is sleeved outside each radial rod, one end of each amplitude-changing spring close to each axial rod is fixed with each radial through hole, one end of each radial rod is fixedly connected with an amplitude-changing buckle, the other end of each radial rod is vertically and fixedly connected with the axial rod in each axial central hole, the axial rods are divided into two parts and respectively connected through two semicircular strut connecting frames, two button holes which are communicated with the axial central holes and are arranged in the radial direction are respectively arranged on two sides of the middle part of the lower amplitude-changing part and two sides of the corresponding cutter body position, and a button which penetrates through the button holes in the radial direction and is exposed out of the shell-shaped cutter body is fixed on the two semicircular strut connecting frames, the button hole is provided with a certain length along the height direction and enables the button to move up and down, the distance between the adjacent end parts of the two semicircular support rod connecting frames is greater than the radial length of the amplitude-variable buckle, the upper amplitude-variable part is fixed at the bottom of the ultrasonic transducer, the lower part of the upper amplitude-variable part is provided with a blind hole matched with the upper part of the lower amplitude-variable part, the circumferential surface of the blind hole is axially and uniformly provided with a plurality of annular radial grooves matched with the amplitude-variable buckle, the bottom of the lower amplitude-variable part is fixedly connected with at least one milling amplitude-variable support rod matched with the milling component and at least one rolling amplitude-variable support rod matched with the rolling component, the bottom of the milling amplitude-variable support rod is fixedly provided with a milling columnar buckle, and the bottom of the rolling amplitude-variable support rod is fixedly provided with a rolling columnar buckle; the cutter cover is barrel-shaped, the side wall of the cutter cover is provided with a wall thickness and a countersunk screw hole, and the side wall of the cutter cover is fixedly connected with the lower shell wall of the cutter body through a countersunk screw; the milling component comprises a strip-shaped cutter pad, a quadrilateral face milling blade, an angle chuck and an angle chuck square groove block, wherein one side surface of the cutter pad in the width direction is fixedly connected with the face milling blade through a screw, the side surface and the bottom surface of the face milling blade respectively extend out of the side wall and the bottom wall of a cutter cover (known by the technical personnel in the field, the side wall and the bottom wall of the cutter cover respectively have a milling cutter opening for the side surface and the bottom surface of the face milling blade to extend out), one side surface of the cutter pad in the length direction is vertically and fixedly connected with the axial direction of the angle chuck through a screw, the angle chuck comprises a disc, a plurality of radial clamping tooth cylinders circumferentially and uniformly distributed on the outer circumferential surface of the disc, a chuck spring, a willow-leaf-shaped clamping tooth and a clamping tooth support rod with one end fixedly connected with the clamping tooth, one end of the chuck spring is positioned in the radial clamping tooth cylinders and fixedly connected with the outer circumferential surface of the disc, the other end of the latch supporting rod extends to the end part, far away from the disc, of the radial latch cylinder and is located in the chuck spring, in an original state, the other end of the chuck spring extends out of the radial latch cylinder, the other end of the spring is fixedly connected with the latch, the rotation directions of the plurality of latches are the same, the tips of the plurality of latches integrally rotate clockwise or integrally rotate anticlockwise, an angle chuck groove matched with the angle chuck is formed in one side face of the angle chuck square groove block, a plurality of first transverse clamping grooves matched with the milling columnar fasteners are formed in the other side face of the angle chuck square groove block, the plurality of first transverse clamping grooves are uniformly distributed in the height direction of the angle chuck square groove block, and the distance between every two adjacent first transverse clamping grooves is equal to the distance between every two adjacent annular radial grooves in the upper amplitude variation part; the rolling assembly comprises a square rolling cutter body and four rollers, the square rolling cutter body is formed by combining two flat cubes and then fixedly connecting the two flat cubes through screws positioned at four corners of the flat cubes, square rolling blind holes are formed in four end faces of the square rolling cutter body, the length of each rolling blind hole is equal to that of each roller, the width of each rolling blind hole is smaller than the diameter of each roller, each roller is clamped in each rolling blind hole, part of the circumferential face of each roller is exposed out of the square rolling cutter body and can rotate in each rolling blind hole, two adjacent rollers respectively extend out of the side wall and the bottom wall of the cutter cover (well known to those skilled in the art, rolling knife edges extending out of the two rollers are arranged on the side wall and the bottom wall of the square rolling cutter body respectively), a plurality of second transverse clamping grooves matched with the rolling columnar buckles are formed in one side face of the square rolling cutter body, the plurality of second transverse clamping grooves are uniformly distributed in the height direction of the square rolling cutter body, the distance between the two adjacent second transverse clamping grooves is equal to that the distance between the two adjacent radial clamping grooves in the upper amplitude-variable part, and a bus extending out of the bottom of the roller extending out of the cutter cover is lower than the bottom face milling blade.
Principle analysis: 1) Aiming at different materials, the required amplitudes are different, when the amplitudes are adjusted, the buttons are pressed down by radial operation towards the center of the amplitude-variable part, the two buttons drive the two semicircular strut connecting frames to retract towards the center, so that the radial struts retract, the amplitude-variable buckle is separated from the radial clamping grooves, the buttons are loosened, the radial struts restore under the action of the springs, the amplitude-variable buckle is clamped in the corresponding radial clamping grooves, the knife cover is detached from the knife body, a worker supports the milling component and the rolling component with hands, and then the rolling cylindrical buckle and the milling cylindrical buckle are clamped in the corresponding positions of the second transverse clamping groove and the first transverse clamping groove respectively, so that the amplitude is changed, and the diversification of the processed materials is adapted; 2) In order to adapt to milling angles of different materials and improve processing quality and processing efficiency, the angle of the face milling blade is changed through a rotating structure of the angle chuck, when the face milling blade is used, when the tip of the latch integrally rotates clockwise, the face milling blade rotates anticlockwise, the rotating angle is 0-45 degrees, the milling angle of the face milling blade is changed, when the face milling blade is milled, the machine tool spindle rotates anticlockwise, the angle chuck realizes self-locking, when the tip of the latch integrally rotates anticlockwise, the face milling blade rotates clockwise, the machine tool spindle rotates clockwise, the angle chuck realizes self-locking, and therefore milling safety is guaranteed; 3) The side surfaces and the bottom surfaces of the face milling blades exposed out of the side wall and the bottom wall of the cutter cover respectively mill the curved surface and the plane of the workpiece, and the curved surface and the plane of the workpiece are respectively rolled by the two rollers extending out of the side wall and the bottom wall of the cutter cover, so that the same equipment can realize plane milling-rolling machining and curved surface milling-rolling machining.
The beneficial effects produced by the invention are as follows: 1) The device can realize the random switching processing mode of planes and hole curved surfaces on the premise of not changing cutters; 2) The device can be suitable for processing of different materials by amplitude variation adjustment of the same equipment through amplitude variation adjustment of the upper amplitude variation part and the lower amplitude variation part, so that the processing quality is improved; 3) The device changes the milling angle of the face milling blade through the structure of the angle chuck, and further can improve the machining efficiency of cutting machining of the device through changing the cutting angle of the face milling blade according to the material property of a workpiece.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of an ultrasonic transducer and horn assembly;
FIG. 3 is a schematic view of an assembly structure of the button, the semicircular strut connecting bracket and the axial rod;
FIG. 4 is a schematic cross-sectional structure of the lower horn;
FIG. 5 is an exploded view of the shim, face milling insert, and angle chuck;
FIG. 6 is a partial schematic view of the angle chuck;
FIG. 7 is a schematic front view of an angle chuck square groove block;
FIG. 8 is a schematic view of the back side of the angle chuck square groove block;
FIG. 9 is a schematic structural view of an end face of the knife cover;
FIG. 10 is a schematic front view of a square rolling cutter body;
FIG. 11 is a schematic view of the back structure of a square rolling blade body;
figure 12 is a longitudinal cross-sectional view of the rolling assembly.
In the figure: 1-a machine tool spindle, 2-a tool shank, 3-a slip ring, 4-an ultrasonic transducer, 5-an ultrasonic generator, 6-a tool body, 7-a tool cap, 8-an upper horn, 9-a lower horn, 10-an axial center hole, 11-a radial rod, 12-a horn snap, 13-an axial rod, 14-a semicircular strut link, 15-a button, 16-an annular radial groove, 17-a horn spring, 18-a milling horn strut, 19-a rolling horn strut, 20-a milling cylindrical snap, 21-a rolling cylindrical snap, 22-a shim, 23-a face milling blade, 24-an angle chuck, 241-a disk, 242-a radial chuck barrel, 243-a chuck spring, 244-a latch, 245-a latch strut, 25-an angle chuck square groove block, 26-a first transverse groove, 27-a first vertical groove, 28-a square rolling tool body, 29-a rolling blind hole, 30-a roller, 31-a second transverse groove, 32-a second vertical groove, 33-an angle chuck.
Detailed Description
As shown in fig. 1, a milling-rolling composite device for a flat curved surface based on ultrasonic vibration comprises a tool shank 2 connected with a machine tool spindle 1, a slip ring 3 fixedly sleeved on the tool shank 2, an ultrasonic transducer 4 installed at the bottom of the tool shank 2, an external ultrasonic generator 5, an amplitude variation assembly, at least one milling assembly, at least one rolling assembly, a shell-shaped tool body 6 of which the upper end opening is fixed at the bottom of the ultrasonic transducer 4 and which is integrally used for covering the amplitude variation assembly, the milling assembly and the rolling assembly, and a tool cover 7 blocking the bottom opening end of the tool body 6; the stator of the slip ring 3 is electrically connected with the ultrasonic transducer 4, and the rotor of the slip ring 3 is electrically connected with the ultrasonic generator 5; as shown in fig. 2, 3 and 4, the amplitude variation assembly comprises an upper amplitude variation part 8 and a lower amplitude variation part 9, the lower amplitude variation part 9 is provided with an axial center hole 10, a plurality of radial through holes are uniformly distributed in the circumferential direction of the upper part of the lower amplitude variation part 9, a radial rod 11 is arranged in each radial through hole, an amplitude variation spring 17 is sleeved outside each radial rod 11, one end of each amplitude variation spring 17 close to each axial rod 13 is fixed with each radial through hole, one end of each radial rod 11 is fixedly connected with an amplitude variation buckle 12, the other end of each radial rod 11 is vertically and fixedly connected with each axial rod 13 positioned in the axial center hole 10, the plurality of axial rods 13 are divided into two parts and are respectively connected through two semicircular strut connecting frames 14, two button holes which are communicated with the axial center hole 10 and are arranged in the radial direction are respectively arranged on two sides of the middle part of the lower amplitude variation part 9 and two sides of the corresponding cutter body 6 position, the two semicircular strut connecting frames 14 are both fixed with a button 15 which penetrates through a button hole along the radial direction and is exposed out of the shell-shaped cutter body 6, the button hole is provided with a certain length along the height direction and enables the button 15 to move up and down, the distance between the adjacent end parts of the two semicircular strut connecting frames 14 is larger than the radial length of the amplitude variation buckle 12, the upper amplitude variation part 8 is fixed at the bottom of the ultrasonic transducer 4, the lower part of the upper amplitude variation part 8 is provided with a blind hole matched with the upper part of the lower amplitude variation part 9, the circumferential surface of the blind hole is axially and uniformly distributed with a plurality of annular radial grooves 16 matched with the amplitude variation buckle 12 (the annular radial grooves are grooves which are arranged in an annular shape and are grooves opened along the radial direction as the name implies, and are matched with the amplitude variation buckle, namely the amplitude variation buckle can be clamped in the annular radial grooves, in the specific implementation, if the amplitude variation buckle is a right triangular pyramid shape, the annular radial grooves are also in an annular shape and the cross section is a right triangle, as shown in fig. 1 and 2), the bottom of the lower amplitude-changing part 9 is fixedly connected with at least one milling amplitude-changing strut 18 matched with the milling assembly and at least one rolling amplitude-changing strut 19 matched with the rolling assembly, the bottom of the milling amplitude-changing strut 18 is fixed with a milling cylindrical buckle 20, and the bottom of the rolling amplitude-changing strut 19 is fixed with a rolling cylindrical buckle 21; the knife cover 7 is barrel-shaped, the side wall of the knife cover 7 is provided with a wall thickness and a countersunk screw hole, and the side wall of the knife cover 7 is fixedly connected with the lower shell wall of the knife body 6 through the countersunk screw; as shown in fig. 5, 6, 7, 8 and 9, the milling assembly includes a strip-shaped shim 22, a quadrilateral face milling blade 23, an angle chuck 24 and an angle chuck square groove block 25, wherein one side surface of the shim 22 in the width direction is fixedly connected with the face milling blade 23 through a screw, the side surface and the bottom surface of the face milling blade 23 respectively extend out of the side wall and the bottom wall of the cutter cover 7 (as known to those skilled in the art, the side wall and the bottom wall of the cutter cover 7 respectively have milling cutter openings for the side surface and the bottom surface of the face milling blade 23 to extend out), one side surface of the shim 22 in the length direction is vertically and fixedly connected with the axial direction of the angle chuck 24 through a screw, the angle chuck 24 includes a circular disc 241, a plurality of radial latch cylinders 242 circumferentially and uniformly distributed on the outer circumferential surface of the circular disc 241, a chuck spring 243, a willow-shaped latch 244 and a latch support rod 245 with one end fixedly connected with the latch 244, one end of the chuck spring 243 is located in the radial latch cylinder 242 and fixedly connected with the outer circumferential surface of the circular disc 241, the other end of the latch support 245 extends to the end of the radial latch cylinder 242 far from the end of the disc and is located in the chuck spring 243, in an original state, the other end of the chuck spring 243 extends to the radial latch cylinder 242 and the other end of the spring is fixedly connected with the latch 244, the plurality of latches 244 have the same rotation direction and the whole tip thereof has a clockwise rotation direction or a whole counterclockwise rotation direction, an angle chuck groove 33 adapted to the angle chuck 24 is arranged on one side surface of the angle chuck square groove block 25, the other side surface of the angle chuck square groove block 25 is provided with a plurality of first transverse slots 26 adapted to the milling cylindrical buckle 20 (in specific implementation, a skilled person in the art can realize the fixing by conventional technical means, for example, the milling cylindrical buckle 20 and the first transverse slots 26 are fixed by interference fit, or screws are adopted on two sides to realize the fixing of the milling cylindrical buckle 20 and the first transverse slots 26), a plurality of first transverse clamping grooves 26 are uniformly distributed along the height direction of the angle chuck square groove block 25, and the distance between every two adjacent first transverse clamping grooves 26 is equal to the distance between every two adjacent annular radial grooves 16 on the upper amplitude variation part 8; as shown in fig. 9, 10, 11, and 12, the rolling assembly includes a square rolling cutter body 28 and four rollers 30, the square rolling cutter body 28 is formed by combining two flat cubes and fixedly connecting the two flat cubes by screws located at four corners of the flat cubes, square rolling blind holes 29 are provided on four end faces of the square rolling cutter body 28, the length of the rolling blind hole 29 is equal to the length of the roller 30, the width of the rolling blind hole 29 is smaller than the diameter of the roller 30, the roller 30 is clamped in the rolling blind hole 29, and a part of the circumferential surface of the roller 30 is exposed out of the square rolling cutter body 28 and can rotate in the rolling blind hole 29, two adjacent rollers 30 respectively extend out of the side wall and the bottom wall of the cutter cover 7 (as known to those skilled in the art, there are rolling blades for the two rollers 30 to extend out respectively), one side wall of the square rolling cutter body 28 is provided with a plurality of second transverse slots 31 adapted to the rolling cylindrical clamp 21 (in specific implementation, those skilled in the art can implement this way, if the cylindrical clamp 21 is fixedly clamped to the second transverse slot 31, or both sides of the cylindrical clamp 21 are fixed to the second transverse clamp slot 31, and the distance between the adjacent two transverse milling cutter bodies is equal to the radial bus bars 31 of the adjacent cutter body 7, and the adjacent cutter body 30 is equal to the distance between the transverse slots of the transverse milling cutter body 8.
Principle analysis: 1) Aiming at different materials, the required amplitudes are different, when the amplitudes are adjusted, the buttons 15 are radially pressed towards the center of the lower amplitude-changing part 9, the two buttons 15 drive the two semicircular strut connecting frames 14 to retract towards the center, so that the radial rods 11 are driven to retract, the amplitude-changing buckle 12 is separated from the radial clamping grooves, the buttons 15 are loosened, the radial rods 11 are restored under the action of the springs, the amplitude-changing buckle 12 is clamped in the corresponding radial clamping grooves, the knife cover 7 is detached from the knife body 6, a worker supports the milling assembly and the rolling assembly by hands, and then the rolling cylindrical buckle 21 and the milling cylindrical buckle 20 are respectively clamped at the corresponding positions of the second transverse clamping groove 31 and the first transverse clamping groove 26, so that the amplitude is changed, and the diversification of the processed materials is adapted; 2) In order to adapt to milling angles of different materials and improve processing quality and processing efficiency, the angle of the face milling blade 23 is changed through a rotating structure of the angle chuck 24, when the face milling blade 23 is used, when the tip of the latch 244 rotates clockwise integrally, the face milling blade 23 rotates anticlockwise, the rotating angle is 0-45 degrees, the milling angle of the face milling blade 23 is changed, when the face milling blade is used, the machine tool spindle 1 rotates anticlockwise to realize self-locking of the angle chuck 24, when the tip of the latch rotates anticlockwise integrally, the face milling blade rotates clockwise, the machine tool spindle rotates clockwise, the angle chuck realizes self-locking, and therefore milling safety is guaranteed; 3) The curved surface and the plane of the workpiece are respectively milled by the side surface and the bottom surface of the face milling blade 23 exposed out of the side wall and the bottom wall of the cutter cover 7, and the curved surface and the plane of the workpiece are respectively rolled by the two rollers 30 extending out of the side wall and the bottom wall of the cutter cover 7, so that the planar milling-rolling processing and the curved surface milling-rolling processing can be realized by the same equipment.
In specific implementation, the number of the annular radial grooves 16 is four, and the number of the first transverse locking grooves 26 is four, and the number of the second transverse locking grooves 31 is four. A first vertical clamping groove 27 which is communicated with the two adjacent first transverse clamping grooves 26 and is vertically arranged is arranged between the two adjacent first transverse clamping grooves 26, and the processing is convenient. A second vertical clamping groove 32 communicated with and vertically arranged on each of the two adjacent second transverse clamping grooves 31 is arranged between the two adjacent second transverse clamping grooves 31. The milling assemblies are three, and the hob assemblies are three, so that the machining efficiency is improved. The number of radial bars 11 is eight. The face milling insert 23 may also be an octagonal face milling insert 23. The generatrix of the lowermost part of the roller 30 projecting beyond the bottom wall of the cutter cover 7 is 0.2mm below the bottom surface of the face milling cutter blade 23.
Claims (7)
1. A milling-rolling composite device for a flat curved surface based on ultrasonic vibration is characterized by comprising a tool holder (2) connected with a machine tool spindle (1), a slip ring (3) fixedly sleeved on the tool holder (2), an ultrasonic transducer (4) installed at the bottom of the tool holder (2), an external ultrasonic generator (5), an amplitude variation assembly, at least one milling assembly, at least one rolling assembly, a shell-shaped tool body (6) of which the upper end opening is fixed at the bottom of the ultrasonic transducer (4) and which is integrally used for covering the amplitude variation assembly, the milling assembly and the rolling assembly, and a tool cover (7) blocked at the bottom opening end of the tool body (6); the stator of the slip ring (3) is electrically connected with the ultrasonic transducer (4), and the rotor of the slip ring (3) is electrically connected with the ultrasonic generator (5); the amplitude changing assembly comprises an upper amplitude changing part (8) and a lower amplitude changing part (9), wherein the lower amplitude changing part (9) is provided with an axial center hole (10), a plurality of radial through holes are uniformly distributed in the circumferential direction of the upper part of the lower amplitude changing part (9), a radial rod (11) is arranged in each radial through hole, an amplitude changing spring (17) is sleeved outside each radial rod (11), one end, close to the axial rod (13), of each amplitude changing spring (17) is fixed with each radial through hole, one end of each radial rod (11) is fixedly connected with an amplitude changing buckle (12), the other end of each radial rod (11) is vertically and fixedly connected with an axial rod (13) positioned in the axial center hole (10), the axial rods (13) are divided into two parts and are respectively connected through two semicircular strut connecting frames (14), two button holes which are communicated with the axial central hole (10) and are arranged along the radial direction are respectively arranged at the two sides of the middle part of the lower amplitude-changing part (9) and the two sides of the corresponding cutter body (6), a button (15) which penetrates through the button holes along the radial direction and is exposed out of the cutter body (6) is fixed on the two semicircular strut connecting frames (14), a certain length is arranged along the height direction of the button holes, the button (15) can move up and down, the distance between the adjacent end parts of the two semicircular strut connecting frames (14) is larger than the radial length of the amplitude-changing buckle (12), the upper amplitude-changing part (8) is fixed at the bottom of the ultrasonic transducer (4), the lower part of the upper amplitude-variable part (8) is provided with a blind hole matched with the upper part of the lower amplitude-variable part (9), the circumferential surface of the blind hole is uniformly and axially provided with a plurality of annular radial grooves (16) matched with the amplitude-variable buckles (12), the bottom of the lower amplitude-variable part (9) is fixedly connected with at least one milling amplitude-variable support rod (18) matched with the milling component and at least one rolling amplitude-variable support rod (19) matched with the rolling component, the bottom of the milling amplitude-variable support rod (18) is fixed with a milling cylindrical buckle (20), and the bottom of the rolling amplitude-variable support rod (19) is fixed with a rolling cylindrical buckle (21); the cutter cover (7) is barrel-shaped, the side wall of the cutter cover (7) is provided with a wall thickness and a countersunk screw hole, and the side wall of the cutter cover (7) is fixedly connected with the lower shell wall of the cutter body (6) through a countersunk screw; the milling component comprises a strip-shaped cutter pad (22), a quadrilateral face milling blade (23), an angle chuck (24) and an angle chuck square groove block (25), one side surface of the cutter pad (22) in the width direction is fixedly connected with the face milling blade (23) through a screw, the side surface and the bottom surface of the face milling blade (23) respectively extend out of the side wall and the bottom wall of the cutter cover (7), one side surface of the cutter pad (22) in the length direction is vertically and fixedly connected with the axial direction of the angle chuck (24) through a screw, the angle chuck (24) comprises a disc (241), a plurality of radial clamping tooth cylinders (242) circumferentially and uniformly distributed on the outer circumferential surface of the disc (241), a chuck spring (243), a willow-leaf-shaped clamping tooth (244) and a clamping tooth support rod (245) with one end fixedly connected with the clamping tooth (244), one end of a chuck spring (243) is located in a radial chuck tooth cylinder (242) and fixedly connected with the outer circumferential surface of a disc (241), the other end of a chuck tooth support rod (245) extends to the end part, far away from the disc (241), of the radial chuck tooth cylinder (242) and is located in the chuck spring (243), in an original state, the other end of the chuck spring (243) extends out of the radial chuck tooth cylinder (242), the other end of the spring is fixedly connected with a chuck tooth (244), the rotating directions of a plurality of chuck teeth (244) are the same, the whole tips of the chuck teeth rotate clockwise or anticlockwise integrally, an angle chuck groove matched with an angle chuck (24) is formed in one side surface of an angle chuck square groove block (25) (33) The other side surface of the angle chuck square groove block (25) is provided with a plurality of first transverse clamping grooves (26) matched with the milling cylindrical buckles (20), the plurality of first transverse clamping grooves (26) are uniformly distributed along the height direction of the angle chuck square groove block (25), and the distance between every two adjacent first transverse clamping grooves (26) is equal to the distance between every two adjacent annular radial grooves (16) on the upper amplitude variation part (8); the rolling assembly comprises a square rolling cutter body (28), four rollers (30), the square rolling cutter body (28) is formed by combining two flat cubes and then fixedly connecting the two flat cubes through screws positioned at four corners of the flat cubes, square rolling blind holes (29) are formed in four end faces of the square rolling cutter body (28), the length of each rolling blind hole (29) is equal to that of each roller (30), the width of each rolling blind hole (29) is smaller than the diameter of each roller (30), each roller (30) is clamped in each rolling blind hole (29), part of the circumferential face of each roller (30) is exposed out of the square rolling cutter body (28) and can rotate in each rolling blind hole (29), two adjacent rollers (30) extend out of the side wall and the bottom wall of the cutter cover (7) respectively, a plurality of second transverse clamping grooves (31) matched with the rolling columnar clamping buckles (21) are formed in one side face of the square rolling cutter body (28), the plurality of second transverse clamping grooves (31) are uniformly distributed in the height direction of the square rolling cutter body (28), and the distance between two adjacent second transverse clamping grooves (31) is equal to the distance between the two adjacent radial clamping grooves (23) of the bottom faces of the cutter cover (7).
2. The ultrasonic vibration-based milling-rolling compound device for the flat curved surface is characterized in that the number of the annular radial grooves (16) is four, and the number of the first transverse clamping grooves (26) and the number of the second transverse clamping grooves (31) are four.
3. The ultrasonic vibration-based milling-rolling compound device for the flat curved surface is characterized in that a first vertical clamping groove (27) which is communicated with and vertically arranged on two adjacent first transverse clamping grooves (26) is arranged between two adjacent first transverse clamping grooves (26).
4. The ultrasonic vibration-based milling-rolling compound device for the flat curved surface is characterized in that a second vertical clamping groove (32) which is communicated with and vertically arranged on two adjacent second transverse clamping grooves (31) is arranged between two adjacent second transverse clamping grooves (31).
5. The ultrasonic vibration-based plano-curved milling-rolling composite device according to claim 4, wherein the number of milling assemblies is three, and the number of hob assemblies is three.
6. An ultrasonic vibration-based plano-curved milling-rolling composite device according to claim 5, characterized in that the number of the radial rods (11) is eight.
7. The ultrasonic vibration-based milling-rolling composite device for the flat curved surface is characterized in that the generatrix of the bottommost part of the roller (30) extending out of the bottom wall of the cutter cover (7) is 0.2mm lower than the bottom surface of the face milling cutter blade (23).
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